/**
 * Created by lenovo on 2016/3/17.
 */
package cc.openhome;

public class StringAverage {
    public static void main(String[] args) {
        long sum=0;
        for(String arg:args){
            sum+= Long.parseLong(arg);
        }
        System.out.println("平均："+(float)sum/args.length);
    }
}
